This MIT report, whilst very thorough, has the challenge that it assumes carbon constraints, which are not the only viable policy scenario for the US, quite the contrary. The other challenge, reading this report in 2014, is that it was written before the full magnitude of the US shale gas explosion was visible, although it is mentioned as a factor. Despite this, the panoramic overview of actors, factors, technologies, and scenarios is quite instructive. However, its influence likely got quite reduced by these factors. Quite usefully, the report underlines how the dependency on pipelines mean that the gas markets are highly regionalized, with North America, Europe, and Asia being the most important ones.